package com.hmall.item.interceptor;

import com.hmall.common.context.BaseContext;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Component;
import org.springframework.web.method.HandlerMethod;
import org.springframework.web.servlet.HandlerInterceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@Component
@Slf4j
public class JwtTokenItemInterceptor implements HandlerInterceptor {
    /**
     * 校验JWT令牌
     * @param request
     * @param response
     * @param handler
     * @return
     */
     public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) {
         try {
             //判断当前拦截到的是Controller的方法还是其他的资源
             if (!(handler instanceof HandlerMethod)){
                 //当前拦截到的不是动态方法，直接放行
                 return true;
             }
             //获取请求头的令牌数据
             String token = request.getHeader("authorization");
             System.out.println(token);
             //将用户id存储到ThreadLocal
             BaseContext.setCurrentId(Long.valueOf(token));
             //如果有登录数据，代表已经登录，放行
             return true;
         } catch (Exception e) {
             //否则，发送未认证错误信息
             response.setStatus(401);
             return false;
         }
     }
}
